Heat-sensitive recording material

Abstract

Disclosed is a heat-sensitive recording material comprising the following: a support having at least one colored surface; and a light-scattering layer on the colored surface, wherein the light-scattering layer contains hollow polymer particles and a clarifying agent, the content of the hollow polymer particles is 6 to 35 mass % based on the total solids content of the light-scattering layer, the content of the clarifying agent is 1 part by mass or more, on a solids basis, per part by mass of the hollow polymer particles, and the light-scattering layer is substantially free of a dye precursor and a color developer, and wherein A) the clarifying agent consists of a fatty acid amide, or B) the clarifying agent comprises a combination of a fatty acid amide and at least one member selected from the group consisting of a compound represented by the following formula (1) and 1,2-bis(phenoxymethyl)benzene;wherein in the formula, Xs are the same or different, and each represents CH3 or Cl.

1 . A heat-sensitive recording material comprising:
 a support having at least one colored surface; and   a light-scattering layer on the colored surface,   wherein   the light-scattering layer contains hollow polymer particles and a clarifying agent, the content of the hollow polymer particles is 6 to 35 mass % based on the total solids content of the light-scattering layer, the content of the clarifying agent is 1 part by mass or more, on a solids basis, per part by mass of the hollow polymer particles, and the light-scattering layer is substantially free of a dye precursor and a color developer, and   wherein   A) the clarifying agent consists of a fatty acid amide, or   B) the clarifying agent comprises a combination of a fatty acid amide and at least one member selected from the group consisting of a compound represented by the following formula (1) and 1,2-bis(phenoxymethyl)benzene;   
       
         
           
           
               
               
           
         
       
       wherein in the formula, Xs are the same or different, and each represents CH 3  or Cl. 
     
     
         2 . The heat-sensitive recording material according to  claim 1 , wherein the content of the clarifying agent is 20 to 35 mass % based on the total solids content of the light-scattering layer. 
     
     
         3 . The heat-sensitive recording material according to  claim 1 , wherein the content of the hollow polymer particles is 20 to 30 mass % based on the total solids content of the light-scattering layer. 
     
     
         4 . The heat-sensitive recording material according to  claim 1 , wherein the light-scattering layer further contains non-hollow polymer particles, and the content of the non-hollow polymer particles is 10 to 45 mass % based on the total solids content of the light-scattering layer. 
     
     
         5 . The heat-sensitive recording material according to  claim 4 , wherein the non-hollow polymer particles have an average particle diameter of 0.4 to 2.0 μm. 
     
     
         6 . The heat-sensitive recording material according to  claim 1 , wherein the fatty acid amide comprises at least one member selected from the group consisting of stearic acid amide and palmitic acid amide.